Initiators and Polymerization Conditions

Classical free radical initiators such as 2,2'-azobisisobutyronitrile (AIBN) are commonly used to

Table 2 A selection of functional monomers commonly used in molecular imprinting

Functional monomer(s)

Structure

Approach

Acrylic acids n

COOH

Non-covalent

Vinylpyridines

Acrylamide Vinylbenzoic acids

CONHo

CONHo

Non-covalent

Non-covalent

Non-covalent

Acrylamido-sulfonic acids

Vinyl-iminoacetic acids

Non-covalent

Metal coordination

Vinylboronic acids (for boronate esters)

Vinylbenzaldehydes (for Schiff bases)

Covalent

initiate the polymerization under either thermal or photochemical conditions. Thermal conditions may be preferred in some cases due to limited analyte solubility at lower temperatures, but photochemical initiation at these lower temperatures has certainly been shown to give better results in non-covalent imprinting.

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